کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
636594 1456130 2010 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Mechanical aspects of ferro-elastic behavior and phase composition of La0.58Sr0.4Co0.2Fe0.8O3−δ
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تصفیه و جداسازی
پیش نمایش صفحه اول مقاله
Mechanical aspects of ferro-elastic behavior and phase composition of La0.58Sr0.4Co0.2Fe0.8O3−δ
چکیده انگلیسی
Phase composition and thermo-mechanical properties of La0.58Sr0.4Co0.2Fe0.8O3−δ (LSCF) have been studied. The LSCF perovskite material comprised two phases: rhombohedral and cubic, with a ratio that showed to depend on both cooling rate as well as atmosphere. The fracture stress of LSCF was determined on the basis of ring-on-ring bending tests between room temperature (RT) and 800 °C. Below 700 °C non-linear load-displacement curves were obtained, an effect that is attributed to the ferro-elasticity of the rhombohedral phase. Both SEM and TEM verify the existence of a domain structure in the rhombohedral grains. The indentation fracture toughness appears to be insensitive to temperature variations from RT up to 350 °C. The importance of thermal history on phase composition and the resulting thermo-mechanical behavior is discussed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Membrane Science - Volume 349, Issues 1–2, 1 March 2010, Pages 183-188
نویسندگان
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